Finding the Third Proportional to 85,429.69 and 132,617.25

Step by Step Solution

1. Step 1: Write the proportion equation
   85,429.69 : 132,617.25 = 132,617.25 : x
2. Step 2: Convert to fraction form
   85,429.69/132,617.25 = 132,617.25/x
3. Step 3: Cross multiply
   85,429.69x = 132,617.25 × 132,617.25
4. Step 4: Simplify right side
   85,429.69x = 17,587,334,997.56
5. Step 5: Solve for x
   x = 17,587,334,997.56/85,429.69
6. Step 6: Final answer
   x = 205,869.12